Episode 4.10: The Index
Airdate: March 9, 2005
A vengeful Dixon pushes his luck with Chase (Angela Bassett) to prove that Sloane is working with his old Alliance cronies to decode a top-secret database. But when Syd gets in on the investigation, she realizes that busting Sloane means betraying Nadia. Meanwhile, an ailing relative leads Vaughn to a suprising discovery about his late father.